PractitionerExceptional8.6
Zhanna Tarjeft, FNP-BC, IFMCP
Phoenix, AZ
Published
Functional Medicine
33 verified reviews
Best Functional Medicine Doctors in Arizona
Functional medicine practitioners who address root causes of disease through systems-oriented, patient-centered care. Browse and compare functional medicine doctors across Arizona, scored by AI, powered by real data.
Showing 26 of 27 functional medicine doctors in Arizona
Last updated: May 2026
The highest-rated functional medicine doctors in Arizona include Zhanna Tarjeft, FNP-BC, IFMCP (BDS 8.6), Wanda Ichiriu, PA-C, IFMCP (BDS 8.5), Jennifer J. Sosnowski, MD (BDS 8.3). Rankings are based on BestDosage's transparent BDS scoring methodology, which evaluates credentials, experience, and patient outcomes across 12 categories.
BestDosage has evaluated 27 functional medicine doctors across Arizona based on credentials, patient reviews, and practice transparency. The average BestDosage Score across Arizona is 7.1 / 10 — reflecting a strong overall standard of care statewide. Functional medicine doctors are typically MDs, DOs, NDs, or NPs with additional training through the Institute for Functional Medicine (IFM). Look for board certification and documented experience with root-cause, systems-based protocols.
Functional Medicine Doctors by City in Arizona
PractitionerExceptional8.5
Wanda Ichiriu, PA-C, IFMCP
Phoenix, AZ
Functional Medicine
3 verified reviews
PractitionerExceptional8.3
Jennifer J. Sosnowski, MD
Phoenix, AZ
Published
Functional Medicine
19 verified reviews
PractitionerExceptional8.3
Bryan Glick, DO
Phoenix, AZ
Published
Functional Medicine
41 verified reviews
PractitionerExceptional8.1
Bridget R. Lehmann, NMD
Phoenix, AZ
Published
Functional Medicine
108 verified reviews
PractitionerExceptional8.1
Amelia Lo, Family Nurse Practitioner
Phoenix, AZ
Functional Medicine
125 verified reviews
PractitionerExceptional8.1
Rayette P. Casiano, MD
Phoenix, AZ
Published
Functional Medicine
3 verified reviews
Practitioner
Chad Campbell, PA-C
Phoenix, AZ
Functional Medicine
1 verified reviews
Practitioner
S. Ross Dunbar, ND, MSOM
Phoenix, AZ
Published
Functional Medicine
4 verified reviews
Practitioner
Kari Vernon, DC
Phoenix, AZ
Functional Medicine
43 verified reviews
Practitioner
Patricia StandTal Clarke
Phoenix, AZ
Integrative MedicineFunctional MedicineHerbal Medicine
8 verified reviews
Practitioner
Emily Parke, DO
Phoenix, AZ
PublishedClinical Trials
Functional Medicine
7 verified reviews
Practitioner
Susan Del Sordi-Staats, DO
Phoenix, AZ
Published
Functional Medicine
8 verified reviews
Practitioner
Michelle Jeffries, DO
Phoenix, AZ
Published
Functional Medicine
9 verified reviews
Practitioner
Margaret A. Powell, DC
Phoenix, AZ
Functional Medicine
12 verified reviews
Practitioner
Cheri D. Dersam, MD
Phoenix, AZ
Functional Medicine
18 verified reviews
Practitioner
Burgess Buchanan, MSN, ACNP-C
Phoenix, AZ
Published
Functional Medicine
Practitioner
Tiffany Ziegler, DO, MS
Phoenix, AZ
Published
Functional Medicine
15 verified reviews
Practitioner
Robert Walker, MD
Phoenix, AZ
Published
Functional Medicine
34 verified reviews
Practitioner
Sheridan James, MD
Phoenix, AZ
PublishedClinical Trials
Functional Medicine
13 verified reviews
Practitioner
Tasia Kurland, DNP, AGNP-C
Phoenix, AZ
Functional Medicine
156 verified reviews
Practitioner
Abby Borhan, MD
Phoenix, AZ
Functional Medicine
27 verified reviews
Practitioner
Linda Eller, DO
Phoenix, AZ
Published
Functional Medicine
3 verified reviews
Practitioner
Lexine M. Hebets, MD
Phoenix, AZ
Functional Medicine
7 verified reviews
Practitioner
Danielle B. Bechert, MD
Phoenix, AZ
Published
Functional Medicine
23 verified reviews
Practitioner
Janis Rustad
Phoenix, AZ
Functional Medicine
203 verified reviews
Frequently Asked Questions
Who is the best functional medicine doctor in Arizona?
The highest-rated functional medicine doctors in Arizona based on BestDosage Scores include Zhanna Tarjeft, FNP-BC, IFMCP (BDS 8.6), Wanda Ichiriu, PA-C, IFMCP (BDS 8.5), Jennifer J. Sosnowski, MD (BDS 8.3). Rankings are updated regularly using credentials, patient reviews, and practice transparency data.
How are functional medicine doctors in Arizona scored?
Each functional medicine doctor is scored across 12 categories using public reviews and verified credentials. Scores range from 1 to 10, with tiers from "Listed" to "Elite."
How many functional medicine doctors are listed in Arizona?
We currently have 27 functional medicine doctors listed in Arizona. Browse by city to find providers near you.
How much does a functional medicine doctor cost in Arizona?
Functional medicine doctor costs in Arizona vary by provider, treatment type, and whether insurance is accepted. Many practitioners offer free consultations. Use BestDosage to compare pricing transparency across providers.
What should I look for in a functional medicine doctor?
Look for verified credentials, high patient review scores, transparent pricing, and relevant specializations. BestDosage evaluates all of these factors in its BDS scoring methodology so you can compare providers at a glance.
Which cities in Arizona have the most functional medicine doctors?
The top cities for functional medicine doctors in Arizona include Phoenix (26), Tucson (1).
Does insurance cover functional medicine doctor visits in Arizona?
Insurance coverage for functional medicine doctor visits varies by plan and state. Some providers accept insurance directly, while others offer superbills for out-of-network reimbursement. Check individual practitioner profiles on BestDosage for insurance details.
Is it free to find a functional medicine doctor on BestDosage?
Yes, browsing the directory, viewing profiles, and comparing providers is completely free. Our scoring methodology is published openly for full transparency.
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Reviewed by Chad Waldman, Analytical Chemist · BestDosage Editorial Team · Last updated May 2026